Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d80b8249dfe7d669601c603b891c636b97371f18c909bec1d5a3f33730d36fde:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^